Test results show seven new positive detections for Asian carp DNA beyond electrical barriers in the Chicago Area Waterway System, according to information released by the Army Corps of Engineers.
The results bring the total since 2009 to 85. The latest samples were found June 23 in Lake Calumet, less than six miles from Lake Michigan, The Detroit News reported.
“We often wonder after a tragedy if there had been any warning signs that we missed," Michigan attorney general Bill Schuette said in a statement. "We now have 85 warning signs that Asian carp are an impending tragedy for the Great Lakes.”
The Corps of Engineers has been studying whether to divide the two freshwater basins. The study is due for completion in 2015, according to the newspaper.
Schuette is pushing ahead with a federal lawsuit calling for a permanent ecological barrier between the Great Lakes and Mississippi River basins.